How to make sure the thread is completed?

Question

Hi there,
Say I have a thread (A) and it's running.
is there anyway I can hold all other tasks/threads until the thread (A) is competed?
My GUI hasa button and once clicked some events happens. I would like to restrict the user from clicking the button again until thread A is completed.
any idea?
peter

Answer 1

Hi there,
Say I have a thread (A) and it's running.
is there anyway I can hold all other tasks/threads
until the thread (A) is competed?
My GUI hasa button and once clicked some events
happens. I would like to restrict the user from
clicking the button again until thread A is
completed.
any idea?
petereither..
Thread someOtherThread;
synchronized(this)
   try
        while(someOtherThread.isAlive())
           try
                     // preemptive wait. is better that sleep
                     // which leaves the Thread ON the scheduler list.
                     // This loop will eat about 0% CPU
               notifyAll();
               wait(100);   // Tweak poll time to taste
          catch(InterruptedException ie)
   catch(NullPointerException npex)
}OR
use
try
someOtherThread.join();
catch(InterruptedException ie)
}T)